<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div style="width:980px;margin:0 auto; padding:200px 100px; background: aqua ;">
    <div style="height:60px; background: brown ;">头部</div>
    <div style="height:100px; background: cornflowerblue ;">内容</div>
    <div style="height:50px; background: chartreuse ;">尾部</div>
</div>
</body>
</html>
